43460673646681 has 2 divisors, whose sum is σ = 43460673646682. Its totient is φ = 43460673646680.

The previous prime is 43460673646661. The next prime is 43460673646693. The reversal of 43460673646681 is 18664637606434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38370393139456 + 5090280507225 = 6194384^2 + 2256165^2 .

It is a cyclic number.

It is not a de Polignac number, because 43460673646681 - 2¹³ = 43460673638489 is a prime.

It is a super-2 number, since 2×43460673646681² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43460673646601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21730336823340 + 21730336823341.

It is an arithmetic number, because the mean of its divisors is an integer number (21730336823341).

Almost surely, 2^{43460673646681} is an apocalyptic number.

It is an amenable number.

43460673646681 is a deficient number, since it is larger than the sum of its proper divisors (1).

43460673646681 is an equidigital number, since it uses as much as digits as its factorization.

43460673646681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250822656, while the sum is 64.

The spelling of 43460673646681 in words is "forty-three trillion, four hundred sixty billion, six hundred seventy-three million, six hundred forty-six thousand, six hundred eighty-one".